CVE-2026-46420
Description
setup-php is a GitHub action to set up PHP with extensions, php.ini configuration, coverage drivers, and tools. From 2.25.0 prior to 2.37.1, shivammathur/setup-php resolves the PHP version from repository-controlled files such as .php-version, composer.lock through platform-overrides.php, and composer.json through config.platform.php, and insufficiently constrains those values before incorporating them into generated shell or PowerShell setup scripts, allowing command injection on a GitHub Actions runner when workflows such as pull_request_target check out attacker-controlled contents before invoking setup-php. This issue is fixed in version 2.37.1.
AI Insight
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
shivammathur/setup-phpGitHub Actions | >= 2.25.0, < 2.37.1 | 2.37.1 |
Affected products
2cpe:2.3:a:shivammathur:setup_php:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:shivammathur:setup_php:*:*:*:*:*:*:*:*range: >=2.25.0,<2.37.1
- (no CPE)range: 2.25.0 - 2.37.0
Patches
Vulnerability mechanics
References
4- github.com/shivammathur/setup-php/commit/eeef37e059fb5368a5bc8ed8ce45ff54bd39b80bnvdPatchWEB
- github.com/shivammathur/setup-php/security/advisories/GHSA-pqwm-q9pv-ph8rnvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-pqwm-q9pv-ph8rghsaADVISORY
- github.com/shivammathur/setup-php/releases/tag/2.37.1nvdProductRelease Notes
News mentions
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